Kyrie Irving is a great basketball player, but had NBA fans scratching their heads last year when he made numerous claims that the Earth was probably flat. No one could really tell if he was actually a huge idiot, or simply trolling everyone by making statements like this:

“For what I’ve known for many years and what I’ve been taught is that the Earth is round, but if you really think about it from a landscape of the way we travel, the way we move and the fact that — can you really think of us rotating around the sun, and all planets align, rotating in specific dates, being perpendicular with what’s going on with these planets and stuff like this.”

What does that mean? Who the hell knows!

He would often refuse to directly say “I believe the Earth is flat,” offering more vague statements urging people to question what they are being told. Perhaps it was some sort of philosophical lesson on “fake news,” but it actually had real consequences. Plenty of impressionable young basketball fans began questioning their science teachers and believing YouTube videos made by conspiracy theory wackos.

On Monday, Irving appeared at Forbes’ Under 30 Summit, and the topic came up again. This time, he backtracked on his previous claims and apologized for muddying the waters.

“Hopefully after this, I’m done answering these questions,” Irving says in the clip “At the time, I was huge into conspiracies, and everybody’s been there. Everybody’s been there. Like, ‘Yooo, what’s going with our world?’ You know, you click the YouTube click and it’s like, how deep the rabbithole goes.”

“At the time, I just didn’t realize the effect and I was definitely at that time, like, ‘I’m a big conspiracy theorist. You can’t tell me anything.’ So, I’m sorry about all that, for all the science teachers. Everybody coming up to me like, ‘You know I gotta reteach my whole curriculum!’ I’m sorry. I apologize.”